System and method for searching date sources

ABSTRACT

The present invention relates to a searching system and method arranged to search information available from one or more data sources. The searching system comprises a user interface and a storage means which is arranged to store search templates. The search templates include search profiles which include parameters which are arrange to direct the search in accordance with the nature of the search enquiry. The parameters may include the time period of data sources to be searched, the data sources to be used, and keywords delimiting with the search.

FIELD OF THE INVENTION

The present invention relates to a system and method for obtaininginformation from data sources and, more particularly, but notexclusively, to a searching system and method for obtaining informationfrom a plurality of heterogenous data sources.

BACKGROUND OF THE INVENTION

Systems for carrying out searches of computing system based data sourcesare well known. They include search systems which are available tosearch data sources over networks such as the Internet. They alsoinclude search systems arranged to search data sources such as databaseswhich are provided for specialist searching, such as medical databases,which may or may not be available over networks such as the Internet.

For many systems, the information available from data sources is vast.In the medical area, for example, the amount of data available tomedical professionals is enormous. It is very important that the medicalprofessional be able to properly search this data in order for them tobe able to make clinical decisions. One person cannot hope to personallykeep up with developments in an area such as medicine and they musttherefore rely on access to the available data sources. The search toolsprovided by any search system need to be adequate to facilitate anaccurate and comprehensive search, which is able to be implementedspeedily and without an inappropriate amount of effort required of thesearcher. Presently available searching systems are not satisfactory inthis regard. Present systems usually enable a searcher to input keywords, combinations of key words and sometimes to select the datasources that are required to be searched. The accuracy andcomprehensiveness of any such search depends for the most part on theskill and knowledge of the searcher. They must be able to decide on theappropriate key words to choose for the search, for example. It is plainfact that some people are more skilled in this than others. If they areto select the data sources available for the search, they must have theappropriate knowledge of the best data sources to search. If theyhaven't, the search will not be accurate or comprehensive. The selectionof appropriate search criteria can also be extremely time consuming,particularly where the searcher is not particularly skilled orknowledgable in searching.

SUMMARY OF THE INVENTION

In accordance with a first aspect, the present invention provides asearching system arranged to search information available from a searchspace which includes at least one data source, the searching systemcomprising a user interface and a storage means arranged to store searchtemplates, the search templates including pre-stored search parametersfor controlling the search in accordance with the parameters and whereina user is able to select a search template via the interface and thesearching system is arranged to carry out the search in accordance withthe pre-stored search parameters;

-   -   the search templates including a plurality of user selectable        search profiles, each search profile including parameters which        are arranged to delimit a search space within the available        search space whereby the search will occur within the delimited        search space.

The provision of a search template(s) effectively enables searching“knowledge” about the most effective way to search to be stored in thesystem, by way of search parameters. A user then has access to thispre-stored “knowledge” to facilitate their search. For example, atemplate may have been previously prepared and stored by a user orsystem administrator having particular knowledge of a particular searcharea. This knowledge can be subsequently applied to carry out futuresearches. The skills, time and effort required of a novice user istherefore greatly reduced. If they wish to carry out a particularsearch, the user can look for an appropriate template, via theinterface, for carrying out the search they have in mind, and select thetemplate. It is not necessary for the user to define the parameters forevery search, they can use the pre-stored template.

Preferably, the interface is arranged to enable new search templates tobe prepared and added to the system, essentially providing a “libray” ofsearch templates. Preferably, new templates can be added by users of thesystem and preferably, the system is arranged so that templates preparedby different users can be shared between users.

Templates may also be prepared by users or system administrators who arespecialised searchers.

The search templates include “search profiles” which include searchparameters. These parameters may include the period of the search (whattime period of data sources is to be searched), data sources to be usedin the search, specific ways in which the query must be expressed forany particular data source including selection of a keyword expressionlanguage understood by the data source, the time that the system is totake to carry out the search, and how the results of the search are tobe presented. The search profile may also include predetermined keywordsthat operate to focus the search.

The search profile parameters preferably specify how a search query mustbe expressed for each data source.

Preferably, the search profiles are arranged to encapsulate the natureof the search inquiry. One of the parameters preferably includes thesubject matter of the search inquiry. For example, where the system isarranged to search within the medical domain the search profile mayreflect the nature of the clinical inquiry e.g. “treatment” may searchthe database from the aspect of a “treatment” approach. The subjectmatter that is searched by the “treatment” profile will preferablyinclude data sources which are relevant to treatment or have a treatmentbias. Further, the time period which is searched may be governed by thenature of search inquiry eg. If the subject matter of the search maydetermine that the search period be limited to a particular period inhistory, the profile will be so limited.

Further, the profile may include key words limiting the search toreflect the nature of the clinical enquiry. For example, for a“diagnosis” profile, appropriate key words may be used in the searchprofile eg “diagnosis”.

Preferably, the system enables a user to enter key words (additional tothose that may be provided with the profile).

Preferably, the system is arranged to categorise key words and toutilise key words in the search in dependence on the categorisation. Inone embodiment, a plurality of predefined fields are provided for entryof the key words, each of the fields defining a particular category. Thesearching system may assign different importance to key words dependingupon the category. In one embodiment, the manner of the search appliedby the category will depend upon the profile selected.

Profiles may be organised hierarchically. Such hierarchically organisedprofiles may include “parent” and “child” profiles. The child profilemay provide a more “focused” search within a narrow area within theambit of the parent profile. Preferably, the system interface enablesthe user to view the profiles within their hierarchy to enable selectionof an appropriate profile for a search enquiry.

The search templates preferably further include “Saved Searches”,preferably including a plurality of key words for use by the searchingsystem in carrying out the search. Keywords can may be arrangedaccording to a predefined expression language, such as Boolean logicaloperators. Provision of this facility enables the user to proceed with asearch without having to go to the time and trouble of selecting keywords, or arranging them into the most appropriate expression using apredefined language like Boolean logic. Small alternations in keywordsor keyword expressions provided to-search systems can result insubstantial variation in search success, and the use of expert providedkeyword sets for typical search topics enables novice searchers to usekeywords preselected for their suitability to a specific type of search.

Preferably, the searching system is arranged to present the results ofany search to a user via the interface.

Preferably, the search templates also operate to provide controlparameters to control the way in which the results of the search arepresented to the user.

Preferably, the searching system is arranged to enable users to amendsearch templates.

Preferably, the interface also includes a means whereby a user may carryout a standard search in a conventional manner.

Preferably, the searching system is arranged to carry out searches overa plurality of data sources. Preferably, the system may be arranged sothat each data source or sources may be searched more than once for aparticular search enquiry, either by parallel multiple searches orconsecutively. Preferably, where the same data source or sources aresearched more than once, each of the searches can have a different ratiobetween selectivity and specificity.

This enables multiple searches with different coverages and approachesto be carried out without any extra input from the user.

In accordance with a second aspect, the present invention provides, in asearching system which is arranged to search information available froma search space which includes at least one data source, a method ofcontrolling the searching system by providing a search templateincluding pre-stored search parameters for controlling the search inaccordance with the parameters, the search templates including aplurality of user selectable search profiles, each search profileincluding parameters which are arranged to delimit a search space withinthe available search space whereby the search will occur within thedelimited search space.

In accordance with a third aspect of the present invention, there isprovided a computer program arranged, when loaded on a computing system,to control the computing system to provide a searching system inaccordance with the first aspect of the present invention.

In accordance with a fourth aspect of the present invention, there isprovided a computer readable medium providing a computer program inaccordance with the third aspect of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram demonstrating a system in accordance withan embodiment of the present invention:

FIG. 2 is a schematic diagram illustrating an architecture of the systemof FIG. 1;

FIG. 3 is a flow diagram illustrating operation of the system of FIG. 1;

FIGS. 4 through 9 are diagrams representing “screens” for illustratingoperation of the system of FIG. 1;

FIG. 10 is a diagram representing a screen display illustrating anaspect of operation of a further embodiment of the-present invention;

FIG. 11 is a diagram of an example display for illustrating anotheraspect of operation of the embodiment of FIG. 10; and

FIG. 12 is a diagram of an example display of search results for anexample search.

DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 illustrates a searching system in accordance with an embodimentof the present invention, that comprises a computing system 1implementing the searching system, and providing a user interface touser terminals 2. The user terminals 2 may comprise any appropriatecomputing apparatus, and in this case are illustrated as beingconventional PC's which may be linked to the computing system 1 by anyappropriate link or network, and in this example the link is via theInternet.

The computing system 1 may also be implemented by any appropriatecomputing apparatus, and in this example is implemented as a serverwhich is capable of providing web pages to user browsers loaded on userterminals 2, in a known manner.

The computing system 1 has access to data sources 3, 4, 5, 6, containingdata which is able to be searched by the system 1. In this example, alocal data source 3 is illustrated which is connected to the computingsystem 1 and which may comprise a conventional data base, and alsosources 4, 5, 6 which are accessible over a network such as theInternet. Local or remote data sources are shown by way of example onlyand it will be appreciated that all data sources may be remote or allmay be local, or as illustrated in FIG. 1, there may be a mixture ofboth types of data sources available to the system 1.

The system of the present invention may be capable of accessing andsearching any available data source. In this example embodiment,however, the data sources store medical information, and the searchingsystem is arranged to facilitate clinical searches that may beundertaken by medical professionals. It will be appreciated, however,that the system of the present invention may be applied to any subjectmatter field and any data sources, and is not limited to the domain ofmedicine.

Referring to FIG. 2, the broad architecture of the system 1 comprises auser interface 10 which enables the user to access the searching systemand which in this example comprises a web based interface provided bycomputing system 1 and browsers on the client systems 2. The system alsoincludes means for storing search templates, which include pre-storedsearch parameters for controlling the search in accordance with theparameters, and which in this example include “searches” 11 and“profiles” 12. Each of the searches 11 includes one or more key wordswhich have been pre-stored for particular types of searches which theuser may wish to carry out, and the profiles include other parameterssuch as the dates of publications which the search may be limited to,the selection of the databases to be searched, other keywords which mayfacilitate limitations to a particular “profile”, and other parametersas will become more clear from the following detailed description.

The system architecture also includes a profile manager 13 for managingthe profiles, and a search engine 14 for implementing the search inaccordance with the search templates to search the database data sources15.

Operation of the system will now be described with reference to FIGS. 3through 10.

Note that in some of the drawings which represent example screen shots,trademarks are used (“Quick Clinical”). It will be appreciated that theinvention is not limited by any of this trademark matter.

FIG. 4 represents a screen presented to a user system 2 via theinterface 10 from which a user will enter instructions to carry out asearch following “Start” (reference numeral 20, FIG. 3) system. Thisscreen includes a profile window 100 to enable a user to select searchprofiles 12 and an advanced search window 101 which enables a user toselect searches 11. The page also includes commands 102 which can beselected for other operations which are typical of Internet basedsystems, such as, for example, “Logout”.

In this medical based system, correct selection of the profile 12 isvery important for accurate and clinically valid searches.

Selection of profile 12 is via a drop down list arrangement asillustrated at reference numeral 104 in FIG. 5. Note in FIG. 5 that thesearch has changed to a “Simple Search” 103. FIG. 4 illustrates at 101the “Advanced Search” option. Simple Search and Advanced Search arediscussed further in the following.

The pre-stored search profiles 12 are named for ease of reference as isshown in the drop down list 104. They are also organised hierarchically.For example, search profile “Treatment” is a “leading” search profilewhich will cause the searching system to look into data sources whichcontain information relevant to treatment rather than to diagnosis,aetiology or patient education, for example. The daughter searchprofiles of “Treatment”, shown here as “Pharmacological”, “Preventative”and “Surgical” will look into to treatment into these particular areas.There may be any number of levels of hierarchy, as will be appreciated.

Any profile includes a number of parameters, which delimit the searchaccording to the parameters. Profiles may be edited and new profiles maybe created, via profile manager 13 (reference numerals 22 and 23 of FIG.3, respectively). FIG. 6 is an illustration of a screen displayed to auser who wishes to add or amend a profile. In this embodiment, anyprofile has the following attributes:

-   -   A profile ID 105    -   Date to search articles from 106    -   Date to search articles to 107    -   How to sort or rank articles (eg. by date, by title, by author,        by journal-name etc) 108    -   Data sources to be searched by the search 109    -   The search duration 110    -   The search subject (for now this simply gets appended to search        keywords) 111.    -   The hierarchy of the profile (denoted by the profile id of this        profiles immediate parent) 200.

It will be appreciated that other embodiments may include otherparameters that may be defined by a search profile. A major advantage ofutilising profiles is that the users “knowledge” of a particular area tobe searched can effectively be stored in the system to be reused againby the user and other users. Preferably, search profiles may beavailable to a number of users eg. medical professionals. Users mayupdate or amend or add new profiles utilising their particular knowledgeof an area. over time, therefore, the system increases its knowledgebase. Searching becomes quTicker and more accurate. The search profilereflects the nature of the search enquiry. This embodiment, the searchprofile reflects the nature of the clinical enquiry. The search profiletherefore provides a “focussing” of the search. The search profile mayinclude search keywords to define the profile. It may be facilitated bysearch key words which are selected or entered by a user when carryingout a search.

If the user selects a profile name, the corresponding profilecharacteristics are fetched and displayed in a similar manner to thedisplay of FIG. 6. The profile parameter values may be changed. A changein the profiles name (ID), however, has a special significance. If thename 105 is not change, then the profiles characteristics simply getupdated. If the name, however, is changed, the profile is considered anew profile and it is saved as a immediate child of the profileinitially displayed.

If users wish to change the profile name, they may do so by clicking onthe “Rename” button (not shown but present in the table that displaysthe profile characteristics of another existing profile—it is merely thedisplay of FIG. 6 with the addition of the “Rename” button). In thiscase, none of the other profile characteristics will change. This isdone to separate the functionality of renaming a profile from simplychanging the profile details.

At all times, if the profile name is left blank or with a defaultdescriptive phrase, the new profile becomes temporary and is saved as“Current Profile” in a corresponding hierarchy level.

Once a profile has been selected (reference numerals 22, 23, 24 of FIG.3) either by creating a new profile or choosing an already existingprofile, then a “Search” needs to be selected. The system provides theoption of a “Simple Search” (reference numeral 25 of FIG. 3) or a“Advanced Search” (reference numeral 26 of FIG. 3). If a Simple Searchis selected (reference numeral 103, FIG. 5), the user merely enters keywords that are appropriate for the search.

If the option of “Advanced Search” is chosen (see FIG. 7), the user hastwo alternatives.

In the first alternative, the user may create a new Advanced Search(reference numerals 27 and 2 of FIG. 3) via the Search Manager 16. FIG.7 illustrates an example screen presented to the user for AdvancedSearch. The user enters key words in field 210. The key words may bewords or phrases with AND OR NOT qualifiers. By typing a word or phrasein the “but not” 211 window, the search will exclude all sourcescontaining this word or phrase.

The user may choose to save their Advanced Search-for future use bytyping a name characteristic for this search in the “Save As” 212 windowand clicking on the Save 213 button. The search is then saved for futureuse by the user and other users. Saving searches as a template addsfurther to the “Knowledge” of the system. Saved Searches can be createdby users, shared between users and edited in a similar manner toProfiles.

The alternative option than a user creating their own Advanced Search,is for a user to select a pre-stored Advanced Search template (referencenumeral 29 of FIG. 3). FIG. 8 illustrates the drop down list for thesaved searches. The drop down list 114 includes names of all the savedsearches that have been saved. Clicking on a name eg. asthma search 215selects that search and also gives a list of the key words 116 which thesearch includes. Once the search has been selected (27, 28, 29 of FIG.3) the user may initiate the search (reference numeral 30 FIG. 3) bypressing the “Go” button 115. The search engine 14 then initiates thesearch based on the instructions from the search profile and the Searchselected. The search engine 14 searches the data sources 15 andprovides, in this embodiment, an XML document back to the system. TheXML document is parsed and the results are displayed by the interface 10in a user friendly manner.

FIG. 9 illustrates an example display of search results. The layout ofthe display is effected by the selection of the original Search andProfile. At the very top of the display 116 a summary of the search ispresented, which shows the data sources which were used and also namesthe search. The search results are then listed in accordance with the“ranking” stated in the profile in a list further down screen 117.Documents coming from different sources are grouped together torepresent main categories such as guidelines, journals and text books.Numbers in brackets represent the amount of documents found in eachcategory.

The user may view the list of retrieved documents by moving the scrollbar 118 up and down. By clicking on any of the underlined text “MoreInformation” the user may view the details of the retrieved document.Further information could include various levels of detail such as anabstract or a link to a full document.

FIG. 10 illustrates an example display of a further embodiment of thepresent invention which does not include an option for “Advanced Search”or “Simple Search”. In this Profile Manager embodiment a saved search 50can be selected or alternatively key words can be entered via aplurality of fields 51 which can be defined and arranged to provide acategorisation for each of the key words to be entered. In the exampleillustrated, key words may be entered in the categories “Disease”,“Drug”, Symptoms” and “Others”.

The profile manager 13 may assign different importance or treat the keywords in each category differently depending upon the profile that hasbeen selected. For example, “A Disease” category key word is moreimportant in “Diagnosis” profile and a “Drug” key word is more importantin the “Prescribing” profile. The search can be affected by the categoryassigned to key words, as well as the profile.

A further facility of this further embodiment of the invention is thefacility to search a data source more than once for each search inquiry.Referring to FIG. 11, this embodiment offers “match 1” “match 2” 53searches for the same search enquiry. Match 1 and Match 2 applydifferent searching approaches as regards selectivity and specificity.For example, the first search “match 1” of the data source can bespecified as extremely narrow and have high priority in the “mix” ofresults, e.g. by using all key words that have been typed in by thesearcher and by searching in “titles”, and “abstracts” only. The secondsearch “match 2′ can vary the ratio between selectivity and specificity,appropriate for the size and clinical importance of the source. Althoughthis embodiment shows two different types of searches to be applied tothe source, it will be appreciated that further searches having variedratios between selectivity and specificity can be incorporated.

For the same search inquiry, therefore, several searches havingdifferent approaches to the same data source can be carried out.

The above embodiment has been specifically designed for use for medicalprofessional for searching databases for clinical knowledge. It will beappreciated that the system of the present invention can be used tosearch any data source and is not limited to data sources containingmedical knowledge.

The above embodiment is arranged to search data sources over a networksuch as the Internet. It will be appreciated that the present inventionis not limited to a system which searches data sources over theInternet. Other embodiments may search databases locally to a computingsystem, may search over a network that is not the Internet, or may do amixture of both.

In the above embodiment, search templates are separated into SearchProfiles and Searches. It will be appreciated that a search template maybe organised in different ways to this.

As discussed above, search profiles are not limited by the parameterswhich have been listed in the above embodiment. Many other searchparameters are possible for profiles.

For example, a search profile may specify the order in which the resultsfrom different sources are presented by the user interface (eg. source1, then source 2, then source 3) whether they are intermingled accordingto a defined ranking criterio. Also the number of results to be reportedback from a source can be specified. Further, a profile may specifywhich elements of a result are displayed eg. for an article title,author, journal, elements, abstract or elements abstracted from text,and links to that article. These are all different sub components of thedocument, which the searching system may recognise from a predefinedstructure according to the stored document model, for example in XMLwhich recognises either tags in the retrieved document or searches forkey words which identify the specific document component.

A profile may also indicate whether the sources are to be “linked”. Forexample, a CD-Rom version of a text book can be stored locally and befast to access, and a Web version might be more up to date, but slower.A profile may define that the two sources are linked and integrate theirresults so that they speak with “one voice” to the user.

Further, some data sources may understand special commands eg. theMEDLINE™ system recognises defined words from MESH, and combineskeywords in its own standard expression language and the profile coulddefine specific use of key words for different sources.

Note that, as discussed above profiles may have their own associated keywords (preferably arranged into the most appropriate expressions) whichwill be used at all times with the search.

Other attributes that a profile may have include the following:

-   -   for each data source;    -   number of results to retrieve from this source;    -   weight (ie. Contribution from this source to mix) maximum search        time;    -   priority of the source in the mix;    -   lexical variant generation capability on/off.

The system may include a dictionary of words which may be selected fromby the user as key words, in order to assist the user.

Another option for profiles is that they could include some parametersthat are permanently fixed and cannot be edited by users. For example,it may be desirable to ensure that a particular profile for searchinganatomy is always searches “Grays Anatomy” and the Search Profile may befixed so that this text is always searched. Other aspects of the profilecould be amended. On the other hand, the profile could include aparameter which specifies that a particular source is not to besearched.

As discussed above, search templates (including profiles and searches)can be shared between users. This can be done in any number of ways. Forexample, all new templates may be stored centrally by the system andshared by all, or stored centrally and only available to the user whocreated it, or available to a certain group (much like a bulletin boardwith a subscriber model). Alternatively, new templates may be storedlocally on the user's system and only used by the creator. A furtheralternative is that all new templates may be stored centrally but downloaded to a local computer to be added to its library, so that there maybe a separate template library to the core templates normallyavailable—users browse the library to add more templates to their systemto suit their particular needs.

There are also other options for sharing templates. The searching systemof the present invention, it will be appreciated, may be implemented byany software/hardware arrangement that implements the functionsdescribed above.

It will be appreciated from the above description the present inventionis in concerned with the user interface and the provision of searchqueries for searching multiple databases (the “front end”). The actualsearch engine (the “back end”) which implements the search queriesformulated in accordance with the present invention, is not part of thepresent invention. Any appropriate search engine which can search thedata source may be utilised to search in accordance with the searchtemplate.

The following two examples illustrate aspects of the embodiment of thepresent invention. One example relates to searching of clinicaldatabases. The other example relates to searching of legal databases, inorder to illustrate that the system can be applied across any subjectmatter.

EXAMPLE 1

The user may choose one of many available profiles, each of which hasthe capacity to modify the search query without user intervention.

Table 1. Detailed design of the profile “Diagnosis”. #1#, #2#, #3#, #4#indicate the content typed by the users as keywords. TABLE 1 Source P WR Search String Merck1 1 1 5 (#1# AND #3# AND #4#) AND+ (“diagnosis” OR“symptoms and signs” OR “laboratory findings” OR “classification”)Merck2 2 2 10 (#1# AND #3#) AND+ (“diagnosis” OR “symptoms and signs” OR“laboratory findings” OR “classification”) PubMed3 3 1 10 #1# ATTR+[Title] AND #3# ATTR+ [Title/Abstract] AND #4# ATTR+ [Title/Abstract]ATTR+/diag Practice Guidelines English 10 years Human Pubmed4 4 2 10 #1#ATTR+ [Title] AND (#3# OR #4#) ATTR+ [Title/Abstract] ATTR+/diag English10 years Human HealthIn 5 2 10 #1# AND #3# site5 HealthIn 6 2 10 #1# OR#3# site6 TGL7 7 2 10 #1# AND (#3# OR #4#) AND+ “diagnosis”

There are three ways in which the profile reflects the nature of thesearch.

by adding additional search words to the search query by restricting thesearch space within the selected source by allowing to perform searchonly on sources which are most relevant to the nature of the medicalenquiry

The example above shows the profile “diagnosis”. Additional words suchas “diagnosis” or ‘signs and symptoms” are being included in the searchquery without user intervention.

The search space restriction is illustrated by using words such as“Practice Guidelines—English—10 years—Human” applied to the PubMedsource, once again transparent to the user.

Only four out of 8 sources are used in the profile “Diagnosis” becauseonly these sources contain information most relevant to the medicalenquiries in the area of differential diagnosis.

The Keywords.

The properly defined search query requires that the user makes a choiceof the search profile and types at least one keyword. However user mayattempt to make much more complex search using many keywords at the sametime. The user interface allows to streamline this process of enteringthe keywords by:

Providing multiple entry fields with descriptors Providing “Builder”functionality which assists in making more complex Boolean logicenquiries.

Categorisation of the Keywords.

A unique feature of the user interface is the categorization of keywords

The above example indicates that different keywords can be entered inseparate entry fields according to their meaning. Disease names areexpected to by entered in the field with the ‘disease” descriptor ordrug names to be entered in the field with the “drug” descriptor.

This unique approach allows the system to “know” the category to whicheach keyword belongs. That knowledge is use in the profile engineeringto assign different importance to keyword categories (eg. keywordentered as “disease” is of primary importance in the “Diagnosis” and“Treatment” profile but the drug name is most important in “Drug info”profile)

Multiple Search in the Same Source.

The information contained in any specific source is usually structuredaccording to certain pre-defined rules. For example textbooks arestructured as sections, chapters, sub-chapters, paragraphs. Othersources such as PubMed may use purpose-build lists of key terms such asMeSH to promote the better search techniques.

The system allows to explore such pre-defined structure of the datasource by conducting multiple searches on the same source with variouslevel of specificity and precision. An example of this would be tosearch for the main keyword first in the titles, then in the abstract orsummary, and then in the main body of the text. The results are thenchecked for duplicates and displayed together in the pre-defined order.TABLE 2 Source Merck1 This source is searched with a very narrowlydefined criteria eg. Looking for all keywords in the title Merck2 Thissearch is defined more broadly, e.g. looking only for the main keywordsand within the bigger search space such as abstract or even whole text.PubMed3 Pubmed4

Table 2 above illustrates this approach with two sources, allowing fortwo searches in each source in response to the single user enquiry.Theoretically there is no limit on the amount of multiple searchesconducted on one source.

Search Results.

The results obtained in response to the search query are groupedaccording to a certain criteria. The examples of the categories are:Journals, Textbooks and Guidelines. (ref numeral 300, FIG. 12). Newcategories can be created in future as well as the new functionality toperformed the secondary searches (on previously retrieved results)

The user may choose to read abstract of the selected PubMed article orfull text info retrieved from the other sources as illustrated in FIG.12.

EXAMPLE 2

Similar search capacity as employed in the medical field of knowledgecan be used in the field of legal enquiries. The capacity of usingmultiple sources and multiple entry fields would be most suitable forcomplex, multi-indexed data sources. One of the hypothetical examplescan be illustrated as follows:

Examples of hypothetical search profiles may include: Criminal, Family,Fraud and Legislation. Esentially any well defined type of legal enquirycan became a pre-defined search profile.

Modifications and variations as would be apparent to a skilled addresseeare deemed to be within the scope of the present invention.

1. A searching system arranged to search information available from asearch space which includes at least one data source, the searchingsystem comprising a user interface and a storage means arranged to storesearch templates, the search templates including pre-stored searchparameters for controlling the search in accordance with the parametersand wherein a user is able to select a search template via the interfaceand the searching system is arranged to carry out the search inaccordance with the pre-stored search parameters; the search templatesincluding a plurality of user selectable search profiles, each searchprofile including parameters which are arranged to delimit a searchspace within the available search space whereby the search will occurwithin the delimited search space.
 2. A searching system in accordancewith claim 1, the interface including means enabling new searchtemplates to be added to the system by users.
 3. A searching system inaccordance with claim 1, the system being arranged so that searchtemplates may be accessed by a plurality of users.
 4. A searching systemin accordance with claim 1, wherein the search templates are arranged tostore searches comprising a plurality of key words for use by thesearching system in carrying out the search whereby, in operation, thesearches will be carried out within the delimited search spacedetermined by the selected search profile.
 5. A searching system inaccordance with claim 1, including search entry means enabling the userto enter search data to enable a search to be carried out, whereby, inoperation, the search will be carried out within the delimited searchspace determined by the selected search profile.
 6. A searching systemin accordance with claim 5, wherein the search data may include keywords.
 7. A searching system in accordance with claim 1, wherein thesearch profiles include parameters which are arranged to direct thesearch in accordance with the nature of the search enquiry.
 8. Asearching system in accordance with claim 1, wherein the search profilesinclude parameters which relate to the plurality of different criteriafor delimiting the search space.
 9. A searching system in accordancewith claim 1, wherein the search profiles are programmable whereby toenable adjustment of the search parameters.
 10. A searching system inaccordance with claim 1, wherein the search profile parameters includekeywords or keyword expressions arranged to delimit the search space.11. A searching system in accordance with claim 1, wherein the searchprofile parameters include a definition of a time period of data sourcesto be searched.
 12. A searching system in accordance with claim 1,wherein the search profile parameters include a time that the system isto take to carry out the search.
 13. A searching system in accordancewith claim 1, wherein the search profile parameters specify how a searchquery must be expressed for each data source.
 14. A searching system inaccordance with claim 1, wherein the search profile includes parametersinstructing how search results are presented.
 15. A searching system inaccordance with claim 1, including interface means enabling a user toenter key words into one of a plurality of pre-determined categories.16. A searching system in accordance with claim 15, the searching systembeing arranged to utilise the key words independence on theircategorisation.
 17. A searching system in accordance with claim 1, beingarranged to search a data source a plurality of times in response to asingle search enquiry.
 18. A searching system in accordance with claim17, where each one of the plurality of searches of the same data sourceis arranged to have different selectivity and specificity of the source.19. In a searching system which is arranged to search informationavailable from a search space which includes at least one data source, amethod of controlling the searching system by providing a searchtemplate including pre-stored search parameters for controlling thesearch in accordance with the parameters, the search templates includinga plurality of user selectable search profiles, each search profileincluding parameters which are arranged to delimit a search space withinthe available search space whereby the search will occur within thedelimited search space.
 20. A method in accordance with claim 19,wherein the step of providing search templates includes the step of auser preparing new search templates.
 21. A method in accordance withclaim 19, wherein the search profiles are programmable and the methodcomprises the further step of a user adjusting the search parameters ofa search profile.
 22. A computer programme, arranged, when loaded onto acomputing system, to instruct the computing system to implement asearching system in accordance with claim
 1. 23. A computer readablemedium providing a computer programme in accordance with claim 22.